Human Activities
Fishing
Commercial
Trends: Commercial Landings
Figure App.C.4.4.. A figure showing trends in fishing catch (lbs, left y-axis) and economic value (dollars, right y-axis) for seven major fisheries around the Channel Islands (2000 - 2012).
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Trends over time in commercial fishing activity in Channel Islands National Marine Sanctuary (CINMS) based on landings pounds (blue bars) and value (dark blue line) for seven fisheries from 2000 to 2012. Landings were combined for twenty-two blocks that overlap substantially with the sanctuary (see Figure App.C4.3. for map). Landings for market squid, sardine, and anchovy declined recently while landings of crabs increased. Landings of sea urchin, spiny lobster, and prawn and shrimp were relatively stable. Figure: Leeworthy et al. 2014aTrends: Halibut Fishery
Figure App.C.4.5a.. A figure showing the pounds of California halibut landed by gear type in the commercial fleet from 2005 - 2014.
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Landings of California halibut (Paralichthys californicus) in blocks around Channel Islands National Marine Sanctuary by hook/line (blue), gillnet (green), and trawl (teal) fishing gear. Landings data from the Santa Barbara port complex (Santa Barbara, Ventura, Oxnard, and Port Hueneme) and reflect take from the Fish and Game blocks 683–691, 706-714, 744, 745, 764, and 765 (see Figure App.C4.3 for map of blocks). Data source: CDFW; Figure: NOAA
Figure App.C.4.5b.. A figure showing the number of fishing vessels (and gear types used) in the California halibut fishing fleet from 2005 - 2014.
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The number of vessels fishing for California halibut (Paralichthys californicus) in blocks around Channel Islands National Marine Sanctuary by hook/line (blue), gillnet (green), and trawl (teal) fishing gear. Landings data from the Santa Barbara port complex (Santa Barbara, Ventura, Oxnard, and Port Hueneme) and reflect take from the Fish and Game blocks 683–691, 706-714, 744, 745, 764, and 765 (see Figure App.C4.3 for map of blocks). Data source: CDFW; Figure: NOAATrends: Rock Crab Fishery
Figure App.C.4.6a.. A figure showing the increase in rock crab fishing from 2007 - 2015.
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Commercial fishing activity for rock crabs has increased recently in blocks around Channel Islands National Marine Sanctuary. Landings of rock crabs have increased since 2010. Commercial rock crab data from blocks 683–691, 706–714, 744–745, and 764–765 (see Figure App.C4.3 for map of blocks). Data source: CDFW; Figure: NOAA
Figure App.C.4.6b.. A figure showing the increase in the number of crabbers (those who fish for crabs) 2007 - 2015.
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Commercial fishing activity for rock crabs has increased recently in blocks around Channel Islands National Marine Sanctuary. The number of fishers landing crab has increased since 2008. Commercial rock crab data from blocks 683–691, 706–714, 744–745, and 764–765 (see Figure App.C4.3 for map of blocks). Data source: CDFW; Figure: NOAATrends: By Gear Type
Figure App.C.3.2.. A figure showing fish catch of bottom-dwelling fish, reported from within the Sanctuary from 1985 - 2015.
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Landings (in pounds) and the relative contribution of gear types has changed over time due to changing regulations, economics, and consumer demand. Since 2002, there is zero to minimal set net and trawl landings, and reduced landings for bottom longlines and traps until 2008, followed by a dramatic increase in bottom longline and trap landings to peak levels. Data source: CDFW; Figure: P. Etnoyer/NOAAMap: Trawling and Deep Sea Corals
Figure App.C.3.3.. A map showing landings of fish caught by trawling (a method of commercial fishing) across the Southern California Bight (2007-2011). Locations of known deep-water corals, which are very vulnerable to trawling, are indicated on the map.
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Trawling landings across the Southern California Bight, as illustrated by CDFW 10 square kilometer blocks and shown along with known locations of stony deep-water corals. Trawling is known to disturb bottom habitats and deep-sea corals. Even though trawling effort has decreased in recent years, the impacts of this gear type can be long lived. Data source: CDFW, Perry et al 2010; Map: P. Etnoyer/NOAA, Etnoyer et al. 2015Map: Fixed Gear and Deep Sea Corals
Figure App.C.3.4.. A map showing landings of fish caught by fixed gear (a method of commercial fishing) across the Southern California Bight (2007-2011). Locations of known deep-water gorgonians, which are very vulnerable to trawling, are indicated on the map.
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Historical landings of fixed gear that could impact benthic habitats are shown along with the locations of deep-sea gorgonians in the map above. Fixed gear usage is moderate around the Channel Islands and likely impacts gorgonians in CINMS habitats. Data is from 2007 to 2011. Data source: CDFW, Perry et al 2010; Map: P. Etnoyer/NOAA, Etnoyer et al. 2015Map: Trawl & Fixed Gear with MPAs
Figure App.C.3.5.. A map showing the locations of both trawling and fixed gear fishing in relation to protected areas (2007-2011) within the Southern California Bight.
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Overlay of trawl and fixed gear fishing activity from 2007 to 2011 and protected areas is shown in the map above. Much of the landings is off the Santa Barbara mainland coast; however, fixed gear usage regularly occurs in sanctuary waters. Data source: CDFW; Map: P. Etnoyer/NOAARecreational
Figure App.C.4.2a.. Fishing activity (number of trip and number of anglers per trip) for Commercial Passenger Fishing Vessels (CPFVs) operating out of ports in Santa Barbara and Ventura from 2000 to 2012. Figure: Chen et al. 2015b
Figure App.C.4.2b.. A figure of Commercial Passenger Fishing Vessel (CPFV) trips and anglers per trip accross years (2000 - 2012).
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Fishing activity landings for Commercial Passenger Fishing Vessels (CPFVs) operating out of ports in Santa Barbara and Ventura from 2000 to 2012. Activity landings in 2011 and 2012 returned to levels seen in the early 2000s. Figure: Chen et al. 2015bOil & Gas
Figure App.C.4.17.. A figure showing trends in offshore oil and gas activity in Southern California from 1975 - 2014.
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The status and trends of offshore oil and gas activity in southern California was measured using a normalized index of oil and gas production from offshore wells in state and federal waters in California. Activity has been stable over the last five years, but the short-term average was well below the long-term average (dashed green line). A rather steady decrease in oil and gas production has occurred since the mid-1990s. Data source: Annual reports of the California State Department of Conservation’s Division of Oil, Gas, and Geothermal Resources; Figure: K. Andrews/NOAAOil & Gas Maps
Offshore Oil Platforms
Figure App.C.2.1.. A map of offshore oil platforms within the Santa Barbara Channel, from west to east: Hondo, Harmony, Heritage, Holly, C, B, A, Hillhouse, Habitat, Henry, Houchin, Hogan, Rincon Island, Grace, Gilda, Gail, and Gina.
2015 Refugio Oil Spill
Figure App.C.2.3.. A map showing the area around the Santa Barbara Coast affected by the 2015 Refugio Oil Spill.
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Diagonal black lines cover the area where oil sheen was observed after the 2015 Refugio Oil Spill. The dark black line indicates the short-term fishery closures. See Figures C2.4 and C13.5 for the modeled oil transport, which predicts crude oil reaching sanctuary waters, Santa Rosa, and Santa Cruz islands north-facing beaches days after the spill. Data source: Shoreline Cleanup and Assessment Technique (SCAT) Shoreline Oiling Map. Map: M. Cajandig/NOAA
Figure App.C.2.4.. A map showing projected oil movement following the Refugio Oil Spill in May 2015.
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Modeled oil trajectories based on high frequency (HF) radar and averaged sea surface current vectors during the month of May 2015 (green and blue lines). Yellow triangles represent SCCOOS HF Radar stations, and oil platforms are shown as small gray dots. The HF station at Gaviota was installed immediately after the spill to avoid local data gaps during this critical monitoring time period. It was only active for one and a half months. PTC = Point Conception; RFG = Refugio State Beach; COP = Coal Oil Point; SSD = Summerland Sanitary District; MGS = Mandalay Generating Station; SCI = Santa Cruz Island. Pink lines indicate commercial shipping lanes. The black line encircles the region of interest. Figure: B. Emery and L. Washburn/UCSB
Figure App.C.2.5.. An image of modeled sea surface current directions used to predict oil movement from May 20 to May 25, immediately following the Refugio Oil Spill (2015).
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Daily snapshots of oil transport simulations (blue dots) based on near-real time sea surface current direction and speeds (black arrows) from May 20 to 25, 2015, the days just after the Refugio oil spill. Yellow triangles represent SCCOOS high frequency radar (HFR) observation stations. PTC = Point Conception; RFG = Refugio State Beach; COP = Coal Oil Point. Not pictured is a HFR station at Gaviota, which was temporarily installed for one and half months following the spill (currently no longer active, see http://washburnlab.msi.ucsb.edu/mtu1) to address local data gaps. Not labeled is the yellow triangle/HFR station on Santa Cruz Island. Pink lines indicated commercial shipping lanes. The full oil transport model simulation can be viewed online. Source: SCCOOS; Figure: B. Emery and L. Washburn/UCSBVessel Traffic
Map: Vessel Traffic Patterns
Figure App.C.4.12.. A map showing traffic patterns of large commercial shipping vessels through the Sanctuary (2008, 2010, 2014).
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Traffic patterns of large commercial vessels (cargo and tanker vessels) in the Santa Barbara Channel region for 2008, 2010, and 2014. The number of commercial ship transits is shown, using Automatic Identification System (AIS) data transmitted from ships. Vessels transiting to and from the Ports of Los Angeles/Long Beach that pass by the northern Channel Islands use either the Santa Barbara Channel Traffic Separation Scheme around the north side of the islands, or take routes south of the islands. Data source: USCG AIS data, processed by NMFS; Figure: MSWGSS 2016Map: Vessel Groundings
Figure App.C.3.1.. A map showing vessel grounding locations from 1999 to 2016.
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Reported vessel grounding locations from 1999 to 2016 are shown in the map above. Not all groundings in the CINMS database are included as coordinates are unavailable for some grounding events. Data source: Vessel Assist; Map: M. Cajandig/NOAAVisitors
Trends: Visitors at Frenchy’s Cove
Figure App.C.4.8.. A graph showing the number of visitors brought to Frenchy’s Cove on Anacapa Island by the Island Packers Company from 1993 - 2014.
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Annual number of visitors brought to Frenchy’s Cove, Anacapa Island, by the Island Packers Company. At south Frenchy’s Cove and adjacent reefs, Island Packers Company conducts classroom programs for school groups typically during winter and spring months. No records are available for the number of private boaters that went ashore at any of the Channel Islands in the park. Figure: Channel Islands National ParkMap: Location Recreational Activity
Figure App.C.4.7.. A map of the Santa Barbar Channel showing patterns in coastal recreational activity.
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Spatial patterns in coastal recreational activity levels in southern California (all activity types combined). Based on a standing internet panel designed to be demographically representative and surveyed 4,492 individuals in select south coast region counties. Activities at Channel Islands National Marine Sanctuary (CINMS) included: beach-going (SRI), scenic enjoyment (SRI, SCI, Anacapa, SBI), photography (SRI, SCI, Anacapa), birdwatching (SRI, SCI, SBI), and hiking (SRI, SCI). Figure: Chen et al. 2015cTrends: Visitors (CHIS)
Research
Trends: Active Permits
Human Impacts
Contaminants
Benthic Response Index
Trends: Condition by region
Figure App.E.11.10.. A figure showing the relative impact of human activity on the seafloor across different regions of the Southern California Bight, using the Benthic Response Index as an indicator.
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Comparisons of the Benthic Response Index (BRI), a diversity index of contaminant tolerant and sensitive infauna, among different regions of the Southern California Bight is shown. Island shelf sites (upper right) had been at reference levels (highest ranking) until 2013, when approximately 30 percent of sites were reclassified as low impact. Other regions in the bight did not experience such a large BRI decline as the island shelf, which indicates potential new impacts to sediments around southern California Islands. Figure: K. Schiff/SCCWRPMap: 2013 Trends at sites
Figure App.E.11.9.. A map showing the relative impact of human activity on the seafloor across different regions of the Southern California Bight, using the Benthic Response Index as an indicator.
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The Southern California Water Research Project uses a diversity index of tolerant and sensitive infauna, also known as the Benthic Response Index (BRI), to gauge the ecosystem impact from anthropogenic contamination. The map above shows the 2013 locations of samples and the BRI trends at each location. Previously, island sites were all considered 100 percent pristine (reference), but now roughly 70 percent of samples are considered degraded from that status. Decline in BRI was particularly prevalent around Santa Cruz Island. This decline in BRI was not mirrored in other regions in southern California. The most recent samples, collected in 2013, found that ten of the 15 sites in Channel Island National Marine Sanctuary had infaunal community compositions that were shifting towards species more tolerant of degraded conditions (red) compared to the samples collected previously. Data Source: K. Schiff/ SCCWRP; Map: M. Cajandig/NOAAMap: 2013 Conditions at sites
Figure App.E.11.11.. A map showing sediment sample locations and their respective Benthic Reponse Index sites from a 2013 Southern California Bight-wide survey. The Benthic Response Index is a measure of the impact of humans on the seafloor.
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SCCWRP sediment sample locations and their respective Benthic Response Index (BRI) from the 2013 bight-wide survey are shown in the map. In order to create the BRI, infaunal invertebrate communities are characterized based on the proportion of taxa present in a sample that are sensitive to as opposed to tolerant of contaminant levels. Using a composite score of the infauna community, SCCRWP labels sample sites as reference, low impact, moderate impact, or high impact. Figure: K. Schiff/SCCWRPContaminants in Sediments
Map: 2008 DDT
Figure App.E.11.12.. A map showing DDT contaminant levels in sediments collected across the Southern California Bight in 2008.
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Dichlorodiphenyltrichloroethane (DDT) contaminant levels in sediment sampling locations during SCCRWP’s 2008 bight-wide survey are shown in the map. DDT is most prominent around the Ports of Long Beach, Los Angeles, and Santa Monica Bay. DDT is a legacy contaminant, which means it persists in the environment long after introduction. A large amount of DDT in the bight came from the dumping of the contaminant by the Montrose Chemical Company off Palos Verdes until the early 1980s, which is why the surrounding areas have high DDT levels. CINMS is relatively far from the spill site and thus, has limited DDT concentrations in sediments. Figure: Schiff et al. 2011Map: 2008 Copper
Figure App.E.11.13.. A map showing copper contaminant levels in sediments collected across the Southern California Bight in 2008.
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Copper contaminant levels at sediment sampling locations during SCCRWP’s 2008 Bight wide survey are shown in the map. Copper is a heavy metal contaminant that in high concentrations can be toxic to living marine resources. Concentrations in CINMS are consistently low compared with other regions in the southern California Bight. Figure: Schiff et al. 2011.Map: 2008 Silver
Figure App.E.11.14.. A map showing silver contaminant levels in sediments collected across the Southern California Bight in 2008.
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Silver contaminant levels in sediment sampling locations during SCCRWP’s 2008 bight-wide survey are shown in the map. Silver is a heavy metal contaminant that in high concentrations can be toxic to living marine resources. Concentrations in CINMS and the Santa Barbara Channel are consistently low compared other regions in the Southern California Bight. High concentrations of silver appear to be clustered off the two largest population centers: Los Angeles and San Diego. Figure: Schiff et al. 2011Map: 2008 PBDEs
Figure App.E.11.15.. A map showing the contaminent levels of Polybrominated diphenyl ethers (which are used as flame retardants) in sediments collected across the Southern California Bight in 2008.
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Sediment contaminant levels for Polybrominated diphenyl ethers (PBDEs) in the Southern California Bight are shown in the map above. These products are typically added to manufactured products as flame retardants. Concentrations of PBDEs are low at the islands compared to mainland areas. Figure: Schiff et al. 2011Map: 2008 Pyrethroids
Figure App.E.11.16.. A map showing pyrethroid (insecticide) contaminant levels in sediments collected across the Southern California Bight in 2008.
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Pyrethroids contaminant levels in sediment sampling locations during SCCRWP’s 2008 bight-wide survey are shown in the map. Pyrethroids are typically pollutants coming from insecticide use. In recent years, there has been no agriculture on the islands and thus, pyrethroids are absent from CINMS sediments. Sediments adjacent to CINMS off Ventura have low levels of pyrethroids likely due to agriculture in that area. Figure: Schiff et al. 2011Trends: Exposure levels by region
Figure App.E.11.17.. A figure showing the amount of impacted sediment in varying categories of exposure to sediment contamination (“Cat”) across five sites and three years.
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Percent area of impacted sediments by stratum and survey year in varying categories of exposure to sediment contamination are shown in the bar plot. Category 1 is minimal exposure; Category 2 is low exposure; Category 3 is moderate exposure; and Category 4 is high exposure. Categories are determined by two prominent chemistry indices determined by analyzing a suite of chemical concentrations present in sediment samples. Missing bars represent no data. In minimal exposure, sediment-associated contamination may be present, but exposure is unlikely to result in effects. In low exposure, small increase in contaminant exposure may be associated with increased effects, but magnitude or frequency of occurrence of biological impacts is low. In moderate exposure, there is clear evidence of sediment contaminant exposure at concentrations that are likely to result in biological effects. For high exposure, contaminant exposure is highly likely to result in substantial biological effects. The Channel Islands have no sediments in Category 4 and the large majority of sediments are in Category 1 or 2, thus indicating limited contamination impact in sanctuary sediments. At this time, the suites of chemical indices have not yet been completed for the 2008 bight-wide survey. Figure: Schiff et al. 2011Contaminants in Mussels
Trends: Arsenic
Figure App.E.11.2.. A figure showing a time series of arsenic found in mussel tissue from Santa Cruz Island from 1986 - 2010.
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Time series of arsenic (as μg/g dry weight) in Mytilus spp. at Fraser Point, Santa Cruz Island is shown above. Data is from NOAA’s Mussel Watch Program (monitored 1986-2010). Arsenic values have been slowly declining in Mytilus spp tissue. Arsenic can impact a number of enzymes and has a widespread effects on a number of organ systems. There are multiple potential explanations for this finding, including limited spatial resolution, limited recent data, possible return to background levels consistent with the southern California mainland after remediation, or improved instrumentation and analytics that have been developed since data collection began. Due to this, more through research and data collection is required to confirm this trend. Figure: D. Whitall/NOAA, Mussel WatchTrends: Iron
Figure App.E.11.3.. A figure showing the trends over time of iron found in mussel tissue from Santa Cruz Island from 1986 - 2010.
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Time series of iron (as μg/g dry weight) in Mytilus spp. at Fraser Point, Santa Cruz Island is shown above. Data is from NOAA’s Mussel Watch Program (monitored 1986–2010). Iron values have been slowly declining in Mytilus spp. tissue. There are multiple potential explanations for this finding, including limited spatial resolution, limited recent data, possible return to background levels consistent with the southern California mainland after remediation, or improved instrumentation and analytics that have been developed since data collection began. Due to this, more through research and data collection is required to confirm this trend. Figure: D. Whitall/NOAA, Mussel WatchTrends: Silver
Figure App.E.11.4.. A figure showing the trends over time of silver found in mussel tissue from Santa Cruz Island from 1986 - 2010.
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Time series of silver (as μg/g dry weight) in Mytilus spp. at Fraser Point, Santa Cruz Island is shown above. Data is from NOAA’s Mussel Watch Program (monitored 1986–2010). Silver values have been slowly declining in Mytilus spp. tissue. There are multiple potential explanations for this finding, including limited spatial resolution, limited recent data, possible return to background levels consistent with the southern California mainland after remediation, or improved instrumentation and analytics that have been developed since data collection began. Due to this, more through research and data collection is required to confirm this trend. Figure: D. Whitall/NOAA, Mussel WatchTrends: Heavy metals
Figure App.E.11.5.. A figure showing a coastwide comparison of heavy metals found in mussel tissue from 1986-2010.
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This graph is a California coastwide comparison of total extractables (TE) from Mytilus spp. tissue for heavy metals. Data is from NOAA’s Mussel Watch Program (monitored 1986–2010). The horizontal lines of the red box illustrate the 25th, median, and 75th percentiles, while the top and bottom whiskers represent the 10th and 90th percentiles. Black dots are data points from collection sites and the green ellipsoids represent mean concentration values for metals from sites within CINMS (n = 3). There are multiple potential explanations for this finding, including limited spatial resolution, limited recent data, possible return to background levels consistent with the southern California mainland after remediation, or improved instrumentation and analytics that have been developed since data collection began. Due to this, more through research and data collection is required to confirm this trend. Figure: D. Apeti/NOAA, Mussel WatchTrends: PAHs
Figure App.E.11.6.. A figure showing levels of cancer-causing petroleum-linked chemicals found in the Channel Islands (blue) and offshore sites (red).
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Mean Total Extractables (TE) for individual Polycyclic Aromatic Hydrocarbons or PAHs are compared between Channel Islands (blue) and other offshore sites (red). PAHs are organic contaminants that are carcinogenic. Invertebrate species typically have limited ability to metabolize PAHs; however, they typically do not biomagnify because vertebrates can metabolize them more easily. Concentrations of PAHs are variable, but concentrations at CINMS are usually equivalent, if not lower than other offshore locations. There are multiple potential explanations for this finding, including limited spatial resolution, limited recent data, possible return to background levels consistent with the southern California mainland after remediation, or improved instrumentation and analytics that have been developed since data collection began. Due to this, more through research and data collection is required to confirm this trend. Figure: D. Apeti/NOAA, Mussel WatchMarine Debris
Trends: Southern California Beaches
Figure App.C.4.14.. A graph showing the likelihood of encountering marine debris from 1999 - 2007.
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Marine debris estimates modeled along the mainland southern California coast based on debris measured by the National Marine Debris Monitoring Program. Marine debris was relatively constant across the last five years of this time series (1999-2007) and within historic levels. Data source: Ribic et al. 2012; Figure: K. Andrews/NOAAMap: debris in CalCOFI trawls (historical)
Figure App.C.4.15.. A figure showing the percentage of sampling stations with plastic debris across three sampling years.
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Variation over time in percentage of stations from winter CalCOFI cruises with plastic micro-debris. Micro-debris was present in more than 50 percent of samples at each time period. Figure: Gilfillan et al. 2009Trends: debris in CalCOFI trawls (historical)
Figure App.C.4.16.. A map showing the distribution, concentration, and characteristics of plastic micro-debris in net samples from the CalCOFI region from winter cruises across three sampling years.
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Spatial distribution, concentration, and characteristics of plastic micro-debris in net samples from the CalCOFI region from winter cruises in (A) 1984, (B) 1994, and (C) 2007. Open circles indicate no plastic debris detected and filled circle diameter are proportional to particle concentrations (number per cubic meter). There was no relationship between the numerical concentration of particles and distance from shore, the presumed source of the majority of debris. Figure: Gilfillan et al. 2009Noise
Listening Stations
Figure App.C.2.8.. A map showing the location of historic (green dots) and current (yellow dots) passive acoustic monitoring stations around the Sanctuary and Santa Barbara Channel.
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Previous (green dots) and current (yellow dots) passive acoustic monitoring stations in and around CINMS are shown along with several sources of anthropogenic noise: ports and harbors, oil platforms, shipping lanes, and military testing zones. SIO = Scripps Institution of Oceanography; NOAA NRS = Noise Reference Station. Map: M. Cajandig/NOAATrends: Sound Levels
Figure App.C.4.13.. A graph showing noise levels in the Santa Barbara Channel from 2007 - 2016. 40Hz bands are shown in red, 90Hz bands are shown in blue.
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Ambient noise levels in the Santa Barbara Channel represented as monthly averages for 40 Hz (red) and 90 Hz (blue) bands. The decline in ambient noise levels observed between 2007 and 2010 reflects decreased regional shipping activity during that time. While ambient noise has increased since 2010, it has not returned to the higher levels observed in 2007 to 2008. Data sources: McKenna et al. 2012, J. Hildebrand/ UCSD unpub. data; Figure: J. Hildebrand/SIO UCSDSeabird disturbance
Comparison: By Region
Figure App.C.4.9.. A figure showing rates of human-caused distubance to seabird breeding and nesting sites across three regions: the south coast (SCSR), central coast (CCSR), and north central coast (NCCSR)
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Rates of human-caused disturbance to seabird breeding and roosting sites were low on Santa Cruz Island (SC) compared to other sites across the south coast (SCSR), central coast (CCSR), and north central coast (NCCSR) study regions. Activities noted as causing disturbance at SC in 2012 to 2013 were human power boats, recreational fishing boats, recreational power boats, commercial fishing boats, airplanes, and helicopters. SD = San Diego, PV = Palos Verdes Peninsula, SB = Shell Beach, MD = Montaña de Oro, EB = Estero Bluffs, MO = Montara, PR = Point Reyes, BO = Bodega. Figure: Robinette et al. 2015Whale entanglement
Comparison: By Regions
Figure App.C.4.10b.. A figure showing confirmed entanglement reports of humpback (blue), gray (green), blue (dark blue), and unidentified (orange) whales along the West Coast from 2000 - 2019.
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Annual number of large whale entanglements reported along the U.S. West Coast. Reports of entanglements have increased in recent years. Factors contributing to this trend likely include an increasing overlap of whale activities (e.g., migrating, feeding) with human activities that have the potential to entangle whales (e.g., fishing, buoy installation) and an increase in on-the-water observers likely to report entangled individuals (e.g., whale watching, recreational boating). Confirmed entanglements from 2000 to 2019 of gray and humpback whales include 11 from Santa Barbara and two from Ventura counties. Figure: D. Lawson/NMFS WCRO PRDMap: Whale Overlap with Fishing
Blue
Figure App.C.4.11a.. A map showing the risk posed to blue whales from 11 fixed gear fisheries (a type of commercial fishing) in the Southern California Bight.
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Co-occurrence score (risk) based on multi-year average whale density and fishing effort for 11 fisheries is shown for quarters three (Q3) and four (Q4) for blue whales (Balaenoptera musculus). In Santa Barbara from July to December, there is an elevated risk area for multiple whale species with the California halibut/white seabass set gillnet, hagfish trap, rock crab trap, sablefish, spiny lobster trap, and spot prawn trap fisheries. Figure: Saez et al. 2013Fin
Figure App.C.4.11b.. A map showing the risk posed to fin whales from 11 fixed gear fisheries (a type of commercial fishing) in the Southern California Bight.
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Co-occurrence score (risk) based on multi-year average whale density and fishing effort for 11 fisheries is shown for quarters three (Q3) and four (Q4) fin whales (Balaenoptera physalus). In Santa Barbara from July to December, there is an elevated risk area for multiple whale species with the California halibut/white seabass set gillnet, hagfish trap, rock crab trap, sablefish, spiny lobster trap, and spot prawn trap fisheries. Figure: Saez et al. 2013Humpback
Figure App.C.4.11c.. A map showing the risk posed to humpback whales from 11 fixed gear fisheries (a type of commercial fishing) in the Southern California Bight.